Thanks so far! I don't know if I should call them. I am afraid this could lead to an cancellation. Maybe I should wait and if I decide purchase it just look if they issue the ticket. I think I could be in a stronger position if I have an issued e-ticket, even if there is a missing leg. Then its uniteds task to solve the issue. Now I am afraid they just could say it is a faulty reservation and will cancel it as an e-ticket was never issued.

What do you think?